title: Carbon nanotube coated fiber Bragg grating for photomechanical optic modulator.
abstract: We have demonstrated novel concept of utilizing the photomechanical actuation in carbon nanotubes (CNTs) to tune and reversibly switch the Bragg wavelength. When fiber Bragg grating coated with CNTs (CNT-FBG) is exposed externally to a wide range of optical wavelengths, e.g., ultraviolet to infrared (0.2-200 μm), a strain is induced in the CNTs which alters the grating pitch and refractive index in the CNT-FBG system resulting in a shift in the Bragg wavelength. This novel approach will find applications in telecommunication, sensors and actuators, and also for real time monitoring of the photomechanical actuation in nanoscale materials.
authors.affiliation: Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India.
authors.forename: B N
authors.initials: BN
authors.lastname: Shivananju
authors.forename: Ashish
authors.initials: A
authors.lastname: Suri
authors.forename: Sundarrajan
authors.initials: S
authors.lastname: Asokan
authors.forename: Abha
authors.initials: A
authors.lastname: Misra